Abstract

We numerically investigate the optical transmission through a compound spherical stack with
conventional and metamaterial (MM) layers and also embedded MM defect. A formation of extremely narrow resonant peak with nearly complete transmittance in area of a band gap is found.
We demonstrate that photon fields of certain frequencies can be strongly confined by a left-handed
(LH) defect. The influence of a random deviation in the width of compound spherical layers as
well the transit to the whispering gallery mode (WGM) is also discussed.